firefighters, tomasz kaczowka and mike chiapperini were killed. human remains were found in spengler's abandoned house. >> it's the question and we'll know know what was going through his mind. >> reporter: police are investigating whether the death of spengler's 91-year-old mother in october and donations she made to the fire department could help explain the motives. >>> former president george h.b. bush remains at houston's methodist hospital where he spent christmas with first lady barbara bush as well as his sons. doctors are saying the former president suffered setbacks, that's why sthey had not releasd him before are christmas. he had a bronchitis-type cough. doctors say since then, he's become weak and developed a fever. for more on that massive storm, we turn to nbc's dylan dreyer. good morning, dylan. a shock for so many. >> it's a shock because there's so many different aspects. we were talking about a foot of snow in portions of arkansas, but we're also getting reports of 19 tornadoes down through mississippi and to louisiana. so there